/* Copyright 2009-2015 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . This file is part of the gdb testsuite. It tests displaced stepping over various insns that require special handling. */ .text .global main main: nop /***********************************************/ /* Test call/ret. */ nop .global test_call test_call: call test_call_subr nop .global test_ret_end test_ret_end: nop /***********************************************/ /* Absolute jump with leading prefixes. These don't occur in normal code, but gdb should still DTRT. */ nop .global test_prefixed_abs_jump test_prefixed_abs_jump: ds jmp *test_prefixed_abs_jump_addr .data test_prefixed_abs_jump_addr: .4byte test_prefixed_abs_jump_target .text test_prefixed_abs_jump_target: nop .global test_prefixed_abs_jump_end test_prefixed_abs_jump_end: nop /***********************************************/ /* Test syscall. */ mov $0x14,%eax /* getpid */ .global test_syscall test_syscall: int $0x80 nop .global test_syscall_end test_syscall_end: nop /***********************************************/ /* Test syscall again, this time with a prefix. These don't occur in normal code, but gdb should still DTRT. */ mov $0x14,%eax /* getpid */ .global test_prefixed_syscall test_prefixed_syscall: repnz int $0x80 nop .global test_prefixed_syscall_end test_prefixed_syscall_end: nop /***********************************************/ /* Test stepping over int3. The prefixes are pointless, but it's possible, so we exercise it. */ nop .global test_int3 test_int3: repz repz int3 nop .global test_int3_end test_int3_end: nop /***********************************************/ /* all done */ pushl $0 call exit hlt /***********************************************/ /* subroutine to help test call/ret */ test_call_subr: nop .global test_call_end test_call_end: nop .global test_ret test_ret: ret